file_upload

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations provided, the description carries the full behavioral burden. It adds an odd, likely typo'd hint, 'PrefLights rag_index capacity,' which might mean the tool preflights RAG index capacity, but this is unclear. It does not disclose persistence behavior, indexing timing, overwrite rules, or required permissions.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is compact and the primary purpose is front-loaded. However, the second sentence is cryptic and appears garbled ('PrefLights rag_index capacity'), reducing clarity instead of earning its place.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a four-parameter tool with no annotations and no output schema, the description is incomplete. It fails to clarify the filename/contentType parameters, the meaning of the capacity preflight, or what happens after an upload, leaving an agent with significant uncertainty.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, so the description must compensate. It adds meaning around 'namespace' and 'UTF-8 text document,' but leaves 'filename' and 'contentType' unexplained, and provides no param-level detail beyond the schema's bare names.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description identifies a specific action ('Upload a UTF-8 text document for RAG indexing into a namespace'), which clearly conveys the tool's function and resource. It does not explicitly distinguish itself from sibling tools, but its upload-for-RAG purpose is reasonably unique among the listed siblings.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

The intended use is implied by the phrase 'for RAG indexing into a namespace.' However, there is no explicit guidance on when to prefer this over alternatives such as files_list or rag_search, nor any exclusion conditions.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.